Owon HDS120/HDS100 1ch DSO+DMM, 1MHz/5MSps (September 2024)

[tunk]

- 1MHz bandwidth, 5 MSps
- 30mV~500V/grid
- 2.5us~10s/grid
- looks like there's no BNC, just DMM banana jacks
- 4.5 count DMM
- 2.8" screen, 320*240
- size 188*93*41.5mm
- around US$60

https://owon.com.hk/products_owon_hds120_oscilloscope_multimeter

[Aldo22]

The device looks good for the price, but as far as the specs are concerned, I don't know why I would buy it.
AN870 (or ZT-255) are more precise multimeters with more amp range for less money.
The scope with 5 MSps and 30mV/Div minimum?
Even the pathetic DSO-TC2 has a 10mV/Div range and can just about display a 3mVpp signal (picture).

Is this more for electricians?

[csuhi17]

The device looks good for the price, but as far as the specs are concerned, I don't know why I would buy it.
AN870 (or ZT-255) are more precise multimeters with more amp range for less money.
The scope with 5 MSps and 30mV/Div minimum?
Even the pathetic DSO-TC2 has a 10mV/Div range and can just about display a 3mVpp signal (picture).

Is this more for electricians?

The Owon has a slightly larger display and fewer vertical divisions.
The DSO is 8 divisions and 2.4" The Owon is 5.5 divisions and 2.8".
I don't know how much your 3mV signal would be visible on it or whether the automatic measurement would be able to measure it.
Without tests, we do not know how accurate and sensitive the measurement is.
How many MHz signals do you want to measure with those test leads?
Your DSO has a BNC connector, this one only has a plain DMM measuring lead.

Based on the pictures, this one has a better display and has a few good features that are not found in multimeters of a similar price category.

If it had been released earlier, I would have bought this instead of Fnirsi and Zoyi.
The Zoyi is good despite its faults, but for a few quick measurements this Owon would be more suitable.
Unfortunately, the description is a bit incomplete.


I searched a bit and found that this is the best among Multiscopes of a similar category, with NON-BNC connectors.  I found 2.5MSa/s, 300mV-200V/Div and 500mV-?V/Div.  the display of those looks bad, I don't think it makes sense to compare it with the cheapest oscilloscopes, it would have been unnecessary to make this one along with the other HDS.

[Aldo22]

The Owon has a slightly larger display and fewer vertical divisions.
The DSO is 8 divisions and 2.4" The Owon is 5.5 divisions and 2.8".
I don't know how much your 3mV signal would be visible on it or whether the automatic measurement would be able to measure it.
Without tests, we do not know how accurate and sensitive the measurement is.

The screen resolution alone is not enough.
Even if you assume that the whole 240px would be for the grid, you get 4px for 3mVpp. In practice, it is more likely to be 3px. That's not really enough to display a signal shape.
With the DSO-TC2 it would be 9px at a full 240px. That's not much either, but at least you can guess whether it's a sine, triangle or square.

But don't get me wrong, I really don't want to praise the DSO-TC2. Rather the opposite. I'm just surprised that this Owon can do even less in certain respects.

[csuhi17]

Some info.
It is much lighter than the other versions of the HDS, and a little smaller in size.
The inside was full of flux, I had to clean it, and it had already been manually repaired by Owon.

The part of the multimeter is very similar to that of the previous Owons.
The only innovation is MIN/MAX/AVG.
It measures RMS well only up to 1-2 kHz.
The update is approx. 3 measurements per second.
The lower bar is updated together with the numbers, that is, it only shows the range.

1 MHz is in the "V" range. From 1V to 500V /Div
The fastest time base is 2.5 us, which can still be comfortably used for a 500kHz signal and it seems stable.
But above it, the signal will be so dense and jumps at the peaks.
In the "V" position, all voltages seem to be in the 1MHz range.

In the "mV" position, the situation is different. "30mV, 100mV, 300mV" /Div.
For 30mV/div already at 15kHz, the 100mVpp sine is only 74mVpp.
For 100mV/Div at ~150kHz
300mV/Div also has a limit of ~150kHz.
Above it, the amplitude of the signal decreases significantly.

You cannot move the trigger to the right or left.
The only way to move the signal laterally is when recording is stopped with the play/pause button or single trigger. with F1 and F2.
There is no signal outside the screen, you can only save as many waves as are visible on the display in each timebase.
You can enlarge the stopped signal by 5 time bases.

It can also trigger on very slow signals. 0.1Hz "Auto button"

I think its display is better than that of similar gadgets.


The above example really cannot be fulfilled by this, at least a 6mV signal must be visible in the 30mV/Div.


It seems that there will be another version, at least the description may indicate that.
in the continuity test, it is highlighted separately that it cannot be adjusted for this version.
However, it is present in the menu, but I cannot change it.
There is also the OWON CMS101 clamp meter, which will slowly be available soon. with some plus feature

[csuhi17]

From 2.5 us to 50 us, the length of the saved wave is 600 us.
Above that is the wave you see on the display.

The inscription has been erased from one of the chips, I was not able to make it visible even with the technique seen on the forum.